/Engine/Source/Editor/MeshPaint/Public/MeshPaintHelpers.h
Fills all vertex colors for all LODs found in the given mesh component with Fill Color
static void FillStaticMeshVertexColors ( [UStaticMeshComponent](API\Runtime\Engine\Components\UStaticMeshComponent) * MeshComponent, int32 LODIndex, const [FColor](API\Runtime\Core\Math\FColor) FillColor, const [FColor](API\Runtime\Core\Math\FColor) MaskColor )